Watch this week's episode in full above. Below you'll find more information and links to the topics covered on the show.

Word Highlight: retrospective, prospective

Help us make NewsDepth even better! In this week's very important poll, we ask: What topic -- or topics -- would you like to hear more about next season? After you've voted, write to us. Tell us what you liked this season -- and what you didn't like! What topics should we cover more? Or less? Or -- suggest a Know Ohio or Spot on Science topic!